A terrorist demands a huge ransom in exchange for information on how to disarm the seven bombs he has planted aboard a trans-Atlantic cruise ship. Inspired by real events.

Richard Harris
as Lt. Cmdr. Anthony Fallon

Omar Sharif
as Captain Alex Brunel

David Hemmings
as Charlie Braddock

Anthony Hopkins
as Supt. John McCleod

Shirley Knight
as Barbara Banister

Ian Holm
as Nicholas Porter

Clifton James
as Corrigan

Roy Kinnear
as Social Director Curtain

Caroline Mortimer
as Susan McCleod

Mark Burns
as Hollingworth